在动态与静态培养系统中对巨细胞反应和抗莱什曼疗效的比较评估,使用基于基托的配方
Alaa Riezk1,2, Alec O'Keeffe1, Katrien Van Bocxlaer1,3
1Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.
PloS one
|March 11, 2025
概括
在实验室中模拟生理流体流动显著降低了巨细胞化和莱什曼病治疗药物疗效. 这些发现强调了需要纳入动态条件来进行准确的治疗评估的需要.
科学领域:
- 免疫学和寄生虫学
- 药理学和药物输送 药理学和药物输送
背景情况:
- 目前利什曼病的治疗方法有限,很少有新药在开发中.
- 在体外研究中经常使用静态条件,这可能不会准确地反映体内生理流体的流动.
- 在动态条件下了解巨细胞的反应对于开发有效的抗莱什曼病疗法至关重要.
研究的目的:
- 为了研究模拟生理流体流动对巨细胞功能 (细胞,巨细胞) 的影响.
- 评估在动态与静态体外条件下,包括纳米粒子配方在内的抗莱什曼药物的疗效.
- 强调在体外模型中纳入流体动力学的重要性,以便更准确地预测治疗结果.
主要方法:
- 使用了Quasi Vivo 900中等 perfusion 系统 (QV900) 来模拟生理流体的流动.
- 在静态和动态流动条件下比较巨细胞 (腹膜巨细胞,骨髓衍生巨细胞,THP-1细胞) 细胞和巨细胞.
- 在动态和静态巨细胞培养中评估了安福特B (AmB) 和装有AmB的奇托纳米颗粒对Leishmania major的疗效.
主要成果:
- 与静态培养相比,液体流量在所有测试的巨细胞类型中显著降低了细胞和巨细胞.
- 在模拟的流量条件下,标准的安福特里辛B和纳米颗粒配方的抗莱什曼活性显著降低 (根据流量和配方减少30-80%).
- 在更快的流速下,药物疗效的降低更加明显,这表明流体动力学对治疗结果的影响很大.
结论:
- 模拟的生理液流改变了巨细胞的功能,并在体外显著降低了抗莱什曼药物的疗效.
- 结合流体动力学的体外模型对于准确预测皮肤莱什曼病的治疗反应至关重要.
- 这些发现需要对药物查和开发过程进行重新评估,以包括改善治疗策略的动态培养条件.
相关概念视频
Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
Antiprotozoal Agents
Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...


